# Compare Postbox vs Thunderbird 2026 | Capterra

> Unsure of what to choose? Check Capterra to compare Postbox and Thunderbird based on pricing, features, product details, and verified reviews.

Source: https://www.capterra.com/compare/195148-230507/Postbox-vs-Thunderbird

---

# Postbox vs Thunderbird Features and Cost Comparison

Last updated March 13th, 2026

Provider data verified by our Software Research team, and reviews  
moderated by our Reviews Verification team.[Learn more](https://www.capterra.com/our-story/)

Your comparison:

PostboxThunderbird2/4 selected

[Postbox](https://www.capterra.com/p/195148/Postbox/)[4.7 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

[Thunderbird](https://www.capterra.com/p/230507/Thunderbird/)[4.4 (156)](https://www.capterra.com/p/230507/Thunderbird/reviews/)

[## Postbox](https://www.capterra.com/p/195148/Postbox/)[4.7 (186)](https://www.capterra.com/p/195148/Postbox/reviews/)

Starting Price

$49.00one time

Value-for-Money

4.7

Functionality

4.6

Ease of Use

4.7

Customer Service

4.4

Reviews Sentiment

GH

Based on [186 reviews](#user-reviews)

Positive

178

Neutral

5

Negative

3

[## Thunderbird](https://www.capterra.com/p/230507/Thunderbird/)[4.4 (156)](https://www.capterra.com/p/230507/Thunderbird/reviews/)

Starting Price

Contact vendor

Value-for-Money

4.7

Functionality

4.3

Ease of Use

4.3

Customer Service

3.7

Reviews Sentiment

Based on [156 reviews](#user-reviews)

Positive

135

Neutral

17

Negative

4

## Not a match? Find software alternatives tailored to your priorities.

These software suggestions are similar to those you’re currently comparing.

### LiveAgent

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* * *

Starting Price

$15.00

Per User,Per Month

Free Trial

Free Version

* * *

User rating

97%

of reviewers  
rated it above 4 stars

* * *

### Constant Contact

4.3 (2,911)

* * *

Starting Price

$12.00

Usage Based,Per Month

Free Trial

Free Version

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User rating

86%

of reviewers  
rated it above 4 stars

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### Brevo

4.6 (3,406)

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Starting Price

$9.00

Usage Based,Per Month

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User rating

94%

of reviewers  
rated it above 4 stars

* * *

Highest Rated

### Missive

4.9 (142)

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Starting Price

$18.00

Per User,Per Month

Free Trial

Free Version

* * *

User rating

99%

of reviewers  
rated it above 4 stars

* * *

## Summary

* * *

Key features rated by users

Features selected based on 11,536 reviews from email management software users.  
about the Fit Score methodology.

Fit Score methodology

Our Fit Score reflects how reviewers rate a product’s performance against a set of features reviewers rate as most important. A higher score indicates the product is rated better in delivering what reviewers most care about.

  

If the Fit Score is not shown for a specific product, that only means there are currently not enough relevant data points to develop a meaningful score. It does not indicate that the product should be excluded from further evaluation. Best for Methodology

\--%Fit

Missing features

Feature ratings

Mobile App

NA

Email Distribution

NA

Inbox Management

NA

Email Monitoring

NA

Access Controls/Permissions

NA

\--%Fit

Missing features

Feature ratings

Mobile App

5.0

Email Distribution

NA

Inbox Management

4.5

Email Monitoring

NA

Access Controls/Permissions

NA

User satisfaction

User satisfaction

4.7

User reviews[186](https://www.capterra.com/p/195148/Postbox/reviews/)

Ease of use

4.7

Functionality

4.6

Value for money

4.7

Customer support

4.4

User satisfaction

4.4

User reviews[156](https://www.capterra.com/p/230507/Thunderbird/reviews/)

Ease of use

4.3

Functionality

4.3

Value for money

4.7

Customer support

3.7

Price starts from

Price starts from

$49Per User, One Time

-   Free version
-   Free trial

Price starts from

\--

-   Free version
-   Free trial

Best for

Best for

Postbox provides a powerful email solution for independent consultants, small and medium-sized businesses, large enterprises, and educational institutions.

Best for

Not provided by vendor

## User reviews

Pros & cons

GH

Guy H.

None

> "The customizable tagging and labeling options allow for seamless email management, making it easy to prioritize and..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6361389)

JM

Jaromir M.

owner

> "main issue: not checking reliably new IMAP messages in other than Inbox compared to e.g. eM client.other: settings..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___5086184)

GH

Guy H.

None

> "Postbox's advanced search functionality ensures that finding specific emails or attachments is quick and effortless."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6361389)

NVI

Natesh Venkataraman I.

Partner

> "Calendar is not available- When an email is marked as spam it does not go to the junk folder"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4432978)

LC

Lynn C.

Retired Homeopath

> "I can create as many folders as I want and create filters for ease of filing"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6417493)

BK

Beta K.

founder

> "Unfortunately, there are no mobile apps, I wish someday they create it, oh and add google drive integration."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4338004)

BM

Bridget M.

Producer

> "The support is good, and there are videos if you get stuck. But for me, it is the simplicity of it all, that it..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4994109)

DH

Dag H.

BDM

> "If not logged on the machine for a while, it is unresponsive while synchronizing"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4597965)

DH

Dag H.

BDM

> "I really enjoy the software and with including a synchronization of categories in Outlook 365 and iff possible..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4597965)

AP

Antony P.

Software Manager

> "I find the name difficult to remember!"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6147724)

Burak O.

Ph.D. Student

> "The most important aspect of an e-mail app for me is the ability to create filters and Postbox does a really good..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___3753706)

LF

Laura F.

Distinguished Service Professor

> "Often I want to tag different emails in the conversation with a different topic tag but this isn't possible. "

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___3338548)

AP

Antony P.

Software Manager

> "Loads of features for the more advanced user."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6147724)

BM

Bob M.

owner

> "Second, once I do apply Windows' new way of unblocking installation files, I get the message that the file is..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2513791)

HK

Heinrich K.

Localization Professional

> "I like the clean and crisp layout, ease of use."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4963678)

MS

Martin S.

Motion Designer

> "The feature I miss the most is the missing taskbar badge for unread mails under Windows"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2672051)

TM

Tiago M.

Nothing

> "I didn't encounter any difficulties, so I gladly paid for it and supported the developers."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___6102191)

JP

JEFFREY P.

GURU

> "SOMETIMES I FORGET WHERE I GET MY LICENSE WHEN I INSTALL ON NEW COMPUTER, I THINK THAT'S GOTTEN BETTER NOW"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2208916)

JM

Jaromir M.

owner

> "nice interface, ease of use, reliability (never lost any mail in 10 years)"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___5086184)

PD

Per D.

Designer

> "I spent years trying to find an email app that didn't suck, I even tried out an earlier version of Postbox and was..."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2650367)

PT

Philipp T.

Product Designer

> "Postbox features a beautiful, clear, lucid, and modern interface."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___3464606)

CR

Chris R.

Owner

> "The message filtering does not work."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2133916)

CH

Christian H.

Engineering Consultant

> "The wonderful filter by contacts is one of those great features of Postbox... if not the best!"

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4479339)

JL

JASON L.

Partner/EiC

> "For some reason, Postbox fails to see it."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2559567)

CM

Charles M.

Retired

> "Postbox was very easy to setup and use, and I like the personalization options and the many themes available."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___4553380)

JL

JASON L.

Partner/EiC

> "Weird behaviors."

[See full review](https://www.capterra.com/p/195148/Postbox/#Capterra___2559567)

[View Reviews](https://www.capterra.com/p/195148/Postbox/reviews/)

Leandro A.

Developer

> "I use it as my main email client , both for personal use and for work , it feels comfortable .Big plus that they don't spam you"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___7054778)

SA

Sara A.

Engineer

> "The settings interface is a bit confusing; in the future 365 email accounts may have issues to works as Thunderbird does not..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6357971)

SP

Stuart P.

Product Manager

> "I was using another free email client that would not let me use different ports for incoming and outgoing mail so when searching..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6880981)

JMV

Jose Miguel V.

Adjunct Professor

> "Aesthetics and UI: For me, this is a big problem. While this is subjective, and the interface can be customized, when you open..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

Leandro A.

Developer

> "Also is open source and doesn't spam you"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___7054778)

Brendan B.

Coach

> "I have had certain performance issues that I could not explain or fix."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6799859)

Brendan B.

Coach

> "Free, open, power, highly customizable email client."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6799859)

RK

Robert K.

drafting

> "some extensions have bugs like send later"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6737417)

JMV

Jose Miguel V.

Adjunct Professor

> "Right now I am using Thunderbird for all my personal emails, and the client has all you need to manage successfully all your..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

JF

Jamie F.

Lead Technician

> "I always when trying to select the top email accidentally click the column header and re-order the emails which is annoying,..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5093745)

MK

Matt K.

Consultant

> "Even when I've had ten or more email addresses to manage for different clients, it's been up to the job and easy to use."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6463718)

SA

Sara A.

Engineer

> "I don't like very much the menu, especially the settings section."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6357971)

NP

Nicolas P.

IT Manager

> "Very simple to use but could be configurated to have lots of stuff"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6805419)

VR

Verified Reviewer

Operations Analyst

> "Lack of Cloud Integration: Thunderbird does not offer cloud integration, which may limit its usefulness for users who need to..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

Sunny K.

Marketing Manager

> "Additionally, it facilitates the management of multiple email inboxes in a single, convenient location, which can be quite..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#GetApp___6048711)

UA

Ubed A.

Verification expert

> "However, some users may find Thunderbird's user interface outdated compared to other modern email clients, and it may not..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

JM

Juan M.

SEO supervisor

> "The intuitive user interface makes navigation a breeze, and the seamless integration with my existing email accounts was a huge..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4981089)

VR

Verified Reviewer

Operations Analyst

> "Limited Mobile Support: Thunderbird does not have a dedicated mobile app, which may make it difficult for users to access their..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

DK

Dev K.

Design Engineer

> "This is a best-of-class, open source and Free Software desktop email client that works very well with all necessary email..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6130553)

VR

Verified Reviewer

Operations Analyst

> "Limited Customer Support: Thunderbird is an open-source project, which means that customer support is limited and users may have..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

JMV

Jose Miguel V.

Adjunct Professor

> "Another great addition of the last years was the "Smart folders," making your multiple account inbox easier to visit and search."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

VR

Verified Reviewer

Operations Analyst

> "Complex User Interface: Some users may find Thunderbird's user interface to be complex and difficult to navigate, especially if..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

Sunny K.

Marketing Manager

> "I have set up multiple accounts in Thunderbird, making it convenient for me to receive emails in one place."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#GetApp___6048711)

JMV

Jose Miguel V.

Adjunct Professor

> "This one was my first problem after I switch from Microsoft Outlook."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

UA

Ubed A.

Verification expert

> "Security and privacy: Thunderbird includes features such as encryption, phishing protection, and spam filtering that enhance..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

Gustavo B.

Director

> "It does not offer any cloud based system that might allow the software to be used away from where it was installed and..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3484995)

Hugo G.

Software developer and support

> "Overall pleased but I'll like to see it improved"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6805669)

James C.

Sales and Marketing

> "Sometimes I had difficulty and slowness to do more specific searches, using keywords that were in the body of the email."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3444626)

VR

Verified Reviewer

Operations Analyst

> "Customizable: Thunderbird Mail is highly customizable, allowing users to personalize their email experience by choosing from a..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

VR

Verified Reviewer

DAM Expert

> "No support per email or phone."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5001917)

MK

Matt K.

Consultant

> "It's been my go-to desktop email client for twenty years."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6463718)

MT

Monica T.

Project Manager

> "Sometimes when there are a lot of emails coming in it gets stuck, and from time to time I need to delete some of the emails."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3808513)

DM

Davide M.

Indie Game Developer

> "I've benn using Thunderbird for several years and have had an overall positive experience with the software. While there are..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5081958)

JD

Jacob D.

Executive

> "Namely, half the time when you repond, the reply won't be shown automatically inline (for at least several minutes)."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3513931)

Austin M.

Software Analyst

> "I think the most impactful thing about Thunderbird is the community that uses the software, making it evolve constantly and..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5079584)

UA

Ubed A.

Verification expert

> "Lack of support: Thunderbird is maintained by a small community of developers, so users may not receive prompt support or..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

AR

Ari R.

CEO

> "nice interface;- calendar built in (very well thought out);- tabs for better viewing;- mail and calendar pane in one single..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4153313)

Robert M.

Freelancer

> "I do not know why they have separated outgoing server settings in another section from the account setting."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3763863)

UA

Ubed A.

Verification expert

> "Additionally, Thunderbird's ability to manage multiple email accounts from different providers, including POP, IMAP, and..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

Robert M.

Freelancer

> "The search and filter are not very functional, and I could not find my desired result from it."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3763863)

VR

Verified Reviewer

Consultant / developer

> "Thunderbird is full of features, customizable with addons and themeable."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842831)

VR

Verified Reviewer

Operations Analyst

> "However, some users may find the user interface to be complex and the performance to be slow on older computers."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4565113)

UA

Ubed A.

Verification expert

> "Thunderbird offers a wide range of add-ons and extensions that allow users to customize the program according to their needs."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

DS

David S.

Tech Acct MGR

> "Setting up Microsoft exchange inside of Thunderbird is difficult if you do not know what you're doing there really is no work..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3834541)

Sunny K.

Marketing Manager

> "It accommodates various mail types and allows for easy configuration."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#GetApp___6048711)

VR

Verified Reviewer

CEO

> "The calendar and all the addons can't compete with Google or other alternatives."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4580663)

UA

Ubed A.

Verification expert

> "Its free and open-source software status and cross-platform support also make it a popular choice for users across different..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

Gonzalo M.

Managing Director

> "Integrates less well into Windows than some alternatives."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3712769)

JM

Juan M.

SEO supervisor

> "Thunderbird has truly revolutionized the way I manage my inbox, and I couldn't be more impressed."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4981089)

TB

Tanya B.

Technician

> "One thing i particullarly hated was the fact that the program was crashing on me from time to time."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4620389)

Mohamed E.

Customer Success Specialist

> "I receive all the important emails on this software, it saves a lot of time and gets me notified of any available vacancies."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4635676)

James C.

Sales and Marketing

> "I've had problems with the manager simply stopping working and having to restart."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3444626)

VR

Verified Reviewer

DAM Expert

> "Of course, I like that it is open-source and free of costs. And I like Thunderbird Filelink."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___5001917)

JD

Jacob D.

Executive

> "However, this add-on comes with its own bunch of issues."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3513931)

JM

Juan M.

SEO supervisor

> "From the moment I started using Thunderbird, it was evident that this tool was designed with productivity in mind."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4981089)

JD

Jacob D.

Executive

> "Thunderbird, from my experience, is incredibly slow and buggy."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3513931)

SS

Shashi S.

Student

> "It has fewer features than outlook but as a University student, the software works fine for me because I don't need all those..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4473755)

AR

Ari R.

CEO

> "RAM memory is another con that I'd point out."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4153313)

UA

Ubed A.

Verification expert

> "Overall, Mozilla Thunderbird is a popular email client that provides a range of features and customization options."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4616069)

Robert M.

Freelancer

> "Maybe it is my mistake, So at least it is not user-friendly enough to learn and work with."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3763863)

GS

Grant S.

Head of Sales

> "All the features but leaner, more stable & faster."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6165374)

DP

Darian P.

Team Lead of Internal Tools

> "We don't use the calendar functionality because it constantly would not work for our users."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3021391)

JMV

Jose Miguel V.

Adjunct Professor

> "Since I have been using Thunderbird, I never regret my switch from Outlook."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4842912)

VR

Verified Reviewer

Senior system engineer

> "Most generic features are commercialized which will tend other users to use different mail clients"

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3431281)

SP

Shane P.

Security system engineer

> "I like the fact that Thunderbird was free and worked for the most part."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6008627)

SP

Santosh P.

Digital Marketer

> "Iwas needing cloud access to mails and my webmail was not cutting it."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3198853)

Petter K.

Parish Manager

> "I think the main thing I can say that I like about Thunderbird is that it is free."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___6193707)

AL

Ad L.

Director

> "It has a rather childish menu bar layout in black and white."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3024426)

ML

Mark L.

Owner

> "A great way to use an email system that is very low cost and has the features and benfits you will need for many small business..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3639522)

Bill B.

President

> "Another issue I have is with the built-in calendar. "

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3258266)

Stanley M.

System Administrator

> "I love the new modern look that ships with Thunderbird and the support for dark theme."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4169265)

SP

Shawn P.

Owner

> "The UI is incredibly outdated."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3394046)

VR

Verified Reviewer

Senior system engineer

> "I think if you want to sync your gmail,hotmail, yahoo mail with your local client, Thunderbird is one such mail client which..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3431281)

AL

Ad L.

Director

> "The opening of tabs is something i personally do not like."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3024426)

JJ

Jeet J.

Founder & CEO

> "Moreover, it also supports adding SMTP mail which is really helpful."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4053362)

Teya B.

Teacher: Digital Illustration

> "I find the interface very, very dated."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3150330)

AR

Ari R.

CEO

> "I was delighted to start using this app when a coworker recommended it to me because I'd been trying to find something that was..."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___4153313)

AL

Ad L.

Director

> "Don't like the visual."

[See full review](https://www.capterra.com/p/230507/Thunderbird/#Capterra___3024426)

[View Reviews](https://www.capterra.com/p/230507/Thunderbird/reviews/)

## User interface

[Postbox](https://www.capterra.com/p/195148/Postbox/)

4.74 (186)

[Thunderbird](https://www.capterra.com/p/230507/Thunderbird/)

4.40 (156)

### Features

Do these products fit your needs?

Prioritize real-user-identified key features according to your needs to find your best fit.

\--% Fit

vs

\--% Fit

Access Controls/Permissions

207

Important

Activity Dashboard

150

Important

AI Copilot

120

Important

Postbox

6/47

-   Access Controls/Permissions
-   Activity Dashboard
-   AI Copilot
-   Alerts/Notifications
-   API
-   Archiving & Retention
-   Autoresponders
-   Campaign Analytics
-   Campaign Management
-   Canned Responses
-   Chat/Messaging
-   Collaboration Tools
-   Contact Management
-   Customer Segmentation
-   Customizable Fields
-   Customizable Forms
-   Customizable Templates
-   Data Recovery
-   Drag & Drop
-   Email Distribution
-   Email Marketing
-   Email Monitoring
-   Email Templates
-   Email Tracking
-   Generative AI
-   Inbox Management
-   Mobile App
-   Multiple User Accounts
-   Prioritization
-   Process/Workflow Automation
-   Queue Management
-   Real-Time Analytics
-   Real-Time Monitoring
-   Real-Time Reporting
-   Reporting/Analytics
-   Response Management
-   Routing
-   Search/Filter
-   Shared Inboxes
-   Signature Management
-   Social Media Integration
-   Spam Blocker
-   Support Ticket Management
-   Tagging
-   Third-Party Integrations
-   Whitelisting/Blacklisting
-   Workflow Management

[See all features](https://www.capterra.com/p/195148/Postbox/#features)

Thunderbird

Top features

12/47

-   Access Controls/Permissions
-   Activity Dashboard
-   AI Copilot
-   Alerts/Notifications
-   API
-   Archiving & Retention
-   Autoresponders
-   Campaign Analytics
-   Campaign Management
-   Canned Responses
-   Chat/Messaging
-   Collaboration Tools
-   Contact Management
-   Customer Segmentation
-   Customizable Fields
-   Customizable Forms
-   Customizable Templates
-   Data Recovery
-   Drag & Drop
-   Email Distribution
-   Email Marketing
-   Email Monitoring
-   Email Templates
-   Email Tracking
-   Generative AI
-   Inbox Management
-   Mobile App
-   Multiple User Accounts
-   Prioritization
-   Process/Workflow Automation
-   Queue Management
-   Real-Time Analytics
-   Real-Time Monitoring
-   Real-Time Reporting
-   Reporting/Analytics
-   Response Management
-   Routing
-   Search/Filter
-   Shared Inboxes
-   Signature Management
-   Social Media Integration
-   Spam Blocker
-   Support Ticket Management
-   Tagging
-   Third-Party Integrations
-   Whitelisting/Blacklisting
-   Workflow Management

[See all features](https://www.capterra.com/p/230507/Thunderbird/#features)

### Recognition

No recognitions have been awarded to Postbox

No recognitions have been awarded to Thunderbird

### Deployment & support

Postbox

Deployment

-   Cloud, SaaS, Web-Based
-   Desktop Mac
-   Desktop Windows
-   Desktop Linux
-   On-Premise Windows
-   On-Premise Linux
-   Desktop Chromebook
-   Mobile Android
-   Mobile iPhone
-   Mobile iPad

Support

-   Email/Help Desk
-   FAQs/Forum
-   Knowledge Base
-   Phone Support
-   24/7 (Live rep)
-   Chat

Training

-   In Person
-   Live Online
-   Webinars
-   Documentation
-   Videos

Thunderbird

Deployment

-   Cloud, SaaS, Web-Based
-   Desktop Mac
-   Desktop Windows
-   Desktop Linux
-   On-Premise Windows
-   On-Premise Linux
-   Desktop Chromebook
-   Mobile Android
-   Mobile iPhone
-   Mobile iPad

Support

-   Email/Help Desk
-   FAQs/Forum
-   Knowledge Base
-   Phone Support
-   24/7 (Live rep)
-   Chat

Training

-   In Person
-   Live Online
-   Webinars
-   Documentation
-   Videos

### Company Details

Postbox

-   By Postbox
-   Located in United States
-   Founded in 2008

Thunderbird

-   By Mozilla
-   Located in United States
-   Founded in

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4.1

4.7

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